I kind of drifted into BT. I was a tabletop gamer starting in the late 80s, but mainly red-box D&D, later lots of Games Workshop miniatures stuff.
Hanging around game stores I'd browse through lots of stuff -- and BattleTech kind of caught my attention.
Not per se the giant robots, but the interesting-looking, kind of gritty and realistic presentation they gave to them. It was interesting to me how they'd combine the futuristic and kind of cartoon-derived machines with all those adult themes (at least they impressed me as such when I was 10-15).
Later on I picked up the 2nd ed boxed set and some Ral Partha "unseen" minis.
It was a Finnish translation (I live in Finland) which was produced in around tabletop BT's heyday in about 1990. I still have the boxed set in my bookshelf. (Hilariously the Finnish translators translated the tagline "Game of Armored Combat" as "Game of Giant Robot Combat", literally using the word "robot". So guess it's canon now, eh?

)
I played for a bit, but kind of drifted off, mainly because my gaming buddies were more RPG type of people.
I was only an occasional PC gamer through the later years, and actually missed all the earlier MW games. The only BT-related computer/video game I ever played was a thing called MechForce on the Amiga.
So I got back with MWO, and basically emerged from this weird time capsule where I only really new the original unseen 'mechs. I first learned that clans are now a thing when I installed MWO in 2015. My first game was in a trial Kit Fox Prime which all these weird weapons I had never heard of.